Patent US2949639A successfully refreshed from Google Patents.
US2949639A
Expired / Lapsed
US
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Process for shaping sheet plastic material
Assignee: Individual
•
Filing: 1955-05-17
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Granted: 1960-08-23
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Expires: 1975-05-17
Abstract
No abstract record available.
Inventors
- 👤 Hiram W Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
B; B65; B65B; B65B47/00; B65B47/02; B29; B29C; B29C51/00; B29C51/18; B29C51/20; B29C51/22; B29C51/225; Y; Y10; Y10S; Y10S264/00; Y10S264/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2152101A
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US2334233A
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US2321635A
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US2387747A
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US2518423A
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US2497212A
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US2579415A
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US2526318A
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US2555369A
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US2712208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |